Plenty of intelligent and well-intentioned people with access to financial information fail to master their personal finances. These folks would find nothing to object to about Eric’s three principles of personal finance: spend less than you earn, regularly save toward future goals, and buy and hold solid investments with an eye towards the long term. However, even with this knowledge in hand, tens of millions of people still haven’t been able to overcome the financially detrimental behaviors that prevent them from putting their knowledge into action.